Preheat the oven at 175°C.
Sift the dry ingredients together.
Mix the wet ingredients together.
Cream the butter and sugar until light and fluffy.
Emulsify the eggs into the cream, one at a time.
Add 1/3 of the dry ingredients and 1/2 of the wet ingredients into the mixture and mix well.
Add another 1/3 of the dry ingredients and the rest of the wet ingredients and mix well.
Add the final 1/3 of dry ingredients, scrap through the bowl and mix well. Do not overbeat.
Divide the batter into 15 paper cups in a muffin tin.
Bake in the oven for 15-20 minutes, or when pressed, the cake springs back.
Cool.